The mass spectrometric behaviour of the isomeric 2- and 4-oxo-6,7,8,9-tetrahydro-pyrido[1,2-a]pyrimidines have been studied in detail under electron-impact induced ionization. Differences in the main fragmentation routes of the two isomeric compounds have been established by high resolution mass measurements and linked scan spectra (constant B/E) of the deuterium-labelled analogue. Correlation between the different dominating tautomeric forms and the characteristic fragmentation pattern of the isomers is discussed.
|Number of pages||3|
|Journal||Rapid Communications in Mass Spectrometry|
|Publication status||Published - Jan 1 1997|
ASJC Scopus subject areas
- Analytical Chemistry
- Organic Chemistry